Articles | Volume 8, issue 1
https://doi.org/10.5194/soil-8-283-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/soil-8-283-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Original research article
| 
07 Apr 2022
Original research article |
| 07 Apr 2022
| 07 Apr 2022
Reusing Fe water treatment residual as a soil amendment to improve physical function and flood resilience
Heather C. Kerr
CORRESPONDING AUTHOR
Department of Engineering, Durham University, Durham, DH1 3LE, United
Kingdom
Karen L. Johnson
Department of Engineering, Durham University, Durham, DH1 3LE, United
Kingdom
David G. Toll
Department of Engineering, Durham University, Durham, DH1 3LE, United
Kingdom
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Olivier Evrard, J. Patrick Laceby, and Atsushi Nakao
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A major environmental concern in the Commonwealth of Puerto Rico is increased sediment load to water reservoirs, to estuaries, and finally to coral reef areas. Our research found that sediment loss was mainly caused by interactions of development, heavy rainfall events, and steep mountainous slopes. These results improve our understanding of sediment loss resulting from changes in land use/cover, and will allow stakeholders to make more informed decisions about future land use planning.
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The behaviour of carbon nanomaterials (CNMs) in soils is highly complex and dynamic. As a result, assessments of the possible risks CNMs pose within soil should be conducted on a case-by-case basis. Further work to assess the long-term stability and toxicity of CNM-sorbed contaminants, as well as the toxicity of CNMs themselves, is required to determine if their sorptive abilities can be applied to remedy environmental issues such as land contamination.
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Short summary
Adding an organo-mineral waste product from clean water treatment (WTR) is beneficial for a soil’s water retention, permeability, and strength properties. WTR added on its own significantly improves the shear strength and saturated hydraulic conductivity of soil. The co-application of WTR with compost provides the same benefits whilst also improving soil’s water retention properties, which is beneficial for environmental applications where the soil health is critical.
Adding an organo-mineral waste product from clean water treatment (WTR) is beneficial for a...
